Deep study of the fast bipolar outflows in pre-PNe from CO mm-wave line emission
Abstract
High spatial resolution images of PNe have shown their extremely complex morphology. However, the circumstellar envelopes of their progenitors, the AGB stars, are strikingly spherical. In order to understand the carving processes leading to axisymmetric nebulae, we are carrying out a study of a large sample of pre-PNe. Our emission model of the nebular molecular gas (12CO & 13CO) will allow us to determine important physical parameters (mass, linear momentum, kinetic energy) of the fast bipolar and slow spherical nebular components separately. We will study in an innovative way the properties for each source individually, and put our results in an evolutionary context with the help of the data obtained by us and collected from the literature.
Keywords
Cite
@article{arxiv.0709.4207,
title = {Deep study of the fast bipolar outflows in pre-PNe from CO mm-wave line emission},
author = {G. Quintana-Lacaci and F. Jiménez-Esteban and V. Bujarrabal and A. Castro-Carrizo and J. Alcolea},
journal= {arXiv preprint arXiv:0709.4207},
year = {2008}
}
Comments
Poster contribution, published in Asymmetrical Planetary Nebulae IV